Question

What were the gases which initially formed the earth’s atmosphere?NCERT Solutions for Class 11th Geography Fundamental of Physical Geography Chapter 2 Exercise 2(v)

Answer 1

The gases which are found in earth's atmosphere are , Nitrogen 78.09% , 20.95%
oxygen , 0.93% argon , 0.039% carbon dioxide , and small amounts of other gases.

Answer 2

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Hydrogen and Helium

Earth is believed to have formed from gas and dust orbiting the sun. The vast majority of the gas would have been composed of the lighter elements, such as hydrogen and helium. The early Earth had a large amount of hydrogen and helium in the atmosphere and this would have slowly escaped into space due to the low mass of these gases. Today, hydrogen and helium make up less than 1 percent of the Earth's atmosphere.



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